#ifndef __KEY_H__
#define __KEY_H__

//头文件声明
#include <Reg51.h>
#include "delay.h"

//按键IO的声明
sbit KEY1 = P3^1;
sbit KEY2 = P3^0;
sbit KEY3 = P3^2;
sbit KEY4 = P3^3;

//函数声明
unsigned char Key_Scan();

#endif